Exercise device for use with a chair



FIG. 1 is a perspective view of an exercise device for use with a chair,showing my new design, wherein the broken line showing of the chair isfor illustrative purposes only and forms no part of the claimed design.

FIG. 2 is a left side elevation of the exercise device of FIG. 1,without the chair.

FIG. 3 is a front elevation of the exercise device of FIG. 2; and,

FIG. 4 is a top plan view of the exercise device of FIG. 2.

The ornamental design for an exercise device for use with a chair, as shown and described. 